Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
230035goodexcellent61excellent
220036goodexcellent71excellent
210035goodexcellent51excellent
200031goodexcellent41excellent
190015goodexcellent21excellent
180010excellentexcellent21excellent
17009excellentexcellent11excellent
16006excellentexcellent11excellent
15006excellentexcellent11excellent
14008excellentexcellent21excellent
13009excellentexcellent21excellent
120010excellentexcellent31excellent
110017goodexcellent41excellent
100073moderately pollutedexcellent81excellent
090035goodexcellent71excellent
080031goodexcellent51excellent
070035goodexcellent51excellent
060030goodexcellent41excellent
050033goodexcellent41excellent
040037lightly pollutedexcellent61excellent
030037lightly pollutedexcellent51excellent
020038lightly pollutedexcellent61excellent
010040lightly pollutedexcellent61excellent
000045lightly pollutedexcellent71excellent